Bucket



W. L. THOMPSON.

BUCKET. APPLICATION FILED AUG-3, I920.

Patentd July 18, 1922.

3 SHEETS-SHEET ll/Vl/E/VTOR W. Llhom oaom By 35 ATTORNEYS I W. L.THOMPSON.

BUCKET.

APPLICATION FILED AUG-3.1920.

Patented July 18, 1922.

3 SHEETS-SHEET 2.

w m L A TTOR/VEYS .W. L. THOMPSON.

' BUCKET.

APPLICATION FILED Aus.3, 1920.

1,423,01 Patented July 18, 1922.

3 SHEETSSHEET 3.

WITNESSES I INVENTOR N LX310!!! 3cm. @946 A TTORNEYS viral!) srarssPATENT car es. 1

WILLIAM LOVE THOMPSON, OF GREENVILLE, MISSISSIPPI.

BUCKET.

IAZEMQFHY,

Specification of Letters Patent.

Patented July 18,1922.

Application filed August 3, 1920. Serial No.-400,906.

cially adapted for transporting earth short distances.

The object of the invention is to provide a bucket of this characterwhich will be under the complete and positive control of the operatorirrespective of the material upon which it acting and which isespecially controllable and adapted. to efliciently carry out theexcavation or digging of hard material, serving under all conditions toeffectively and etlicientlyaccumulate the material in the bucket andretain the same therein while it is being conveyed to the desiredpoints.

Other objects and advantages of the invention reside in certain novelfeatures of construction, combination and arrangement of parts whichwill be hereinafter more fully described and particularly pointed outinthe appended claims, reference being had to the accompanying drawingsforming part of this specification. and in which:

Figure 1 is a plan view of the bucket;

Figure 2 is a side elevational View thereof;

.Figure is a front elevational view thereof;

Figure 4cis a transverse vertical section on line 4- lof Figure 1;

Figure 5 is a fragmentary detail perspective view of the end of thecutting bit and associated frame which carries the same;

Figure 6 is a plan view of, a modified form;

Figure '7 is a side elevational view'thereof:

Figure 8 is a transverse vertical section on line 8-8 of Figure 7; and

Figure 9 is a fragmentary detail view of the forward. portion of theside plate.

Referring tothe drawings, it will be seen that the bucket is adapted tobe employed in conjunction with earth working machinery of conventionalconstruction which employs a hoist'line F and a drag line'G. Preferably,the earth working machinery is the .typedescribed in my copendingapplicationSerial No. 870,202, although it may be of any otherconventional type suitable for the purpose. a r

The bucket consists of a bucket body comprising side plates 10 and 11,an inclined back plate l2 secured by angle irons 13 and rivets 14 to thesideplates and itbOttOlYl plate 15 secured to the side plates and havingits rear end upwardly bent as at 16, and

resting upon the lower endof the back plate (see Figure 4). The bottommay also embody the planking 15 if desired. The bottom is removable andisnot intended to be used ordinarily where the material may be moved inone direction along the ground. Suitable cross bars 17 extend betweenand are secured to the side plates to retain the same in spacedrelation. 1

The forward portion of each ofthe side plates is cut away, as shown at18 (see Figure 9) and to the inner side of the reduced portion 19 of theside plates thus formed an adjustable extension 20 is adapted to besecured. The extension 20 is provided with a circular series of boltholes 21. adapted to register'with a plurality of bolt holes2l providedin the reduced portion 18 of the side plates. A plurality of bolts 22,preferably four, extend through the registering boltliolesto secure theextension in adjusted position upon the sideplates. A cross bail 23 issecured to and extends transversely between the extensions 20 tobraceand impart rigidity to the same.

. An oscillating frame is pivoted to the hucketibody and consists ofapair of spaced frame members 24 pivoted, as at 25. to the sideplates'of the bucket body. For this purpose the frame members areprovided with a pair of spaced pivot plates 26 which embrace the reducedportion of the sideplate and receive the pivot pin 25 which extendsthrough the spaced pivoted plate and through the side plate. The framemembers carry, preferably by being formed integrally therewith, acutting bitor blade 27 which extends entirely between and slightlybeyond the frame members 24 and is by virtue of the pivotally mountedframe members pivoted to the bucketbody. The pivotal connection for eachof the frame members also extends through the corresponding extension20.

A long lever 28 is directly and rigidly connected at its front end, asat 29, to each of the frame members 24;, and the rear end of each of thelevers is bent or offset upwardly, as shown in the drawings. As shown inFigures 2 and 7 the levers 28 are secured to the frame members 24 abovethe lower end of the frame members and above the ground. Between thelong levers 28 and the ground and secured to the underside of the longlevers are the runners 30 preferably of wood. Bolts 31 secure the runner30 to the levers 28.

A rear bar 33 extends between the rear ends of the long levers andconstitutes the rear bar of the frame, it being understood that thecutting bit constitutes the front bar of the frame and the long leversand frame member 24: constitute the side bars thereof. The rearextremities of the long levers or .the adjacent portions of the rear baras desired are adapted to be connected with the hoist line F, as shownin the drawings.

A relatively short lever or pull lever 34L is pivotally connected toeach of the frame members 24. In. all forms of my invention the shortlever is pivoted to the frame below and radially of the pivotalconnection 25 of the frame to the bucket body and the pull lever itselfis constrained by suitable guiding means to operate below a certainpoint determined by the character of the work and the particular type ofmachine with which the bucket is associated. The front ends of the pulllevers are adapted to be connected to thedrag line G. I

It is to be understood that for a given machine or for given conditionsofwork. the adjustment or positioning of the forward extension 20 bymeans of the bolt 22 and bolt circle 21 is such as will bring thelongitudinal axis of the pull bars 34- approximately in. the line ofnormal pull of the drag line in loading, and the leverage of this pullis the distance from connection 36 to connection 25. Since the pull ofthe hoist line isgenerally in an upward direction. or normallyapproximately vertical, the leverage of its pull is practically measuredby the horizontal distance between the connection 25 and the hoist lineconnection, or the length of the long lever. It is to be observed thatmoinents about connection 25, due to the drag line and hoist line pull,are opposed. For stability of the relative position of the cutting bitwith respect to the containing means, as in digging these moments arekept equal. The much greater drag line pull, as in heavy digging withit, very short lever arm 36 to 25) is easily opposed by a very moderatestrain on the hoist line because of its much greater leverage (33 to35).

In the form of my invention shown in Figures 1 to a, the short lever 3ais pro vided at its inner end with plurality of pivotal openings 35through any one of which the pivot pin 36 is adapted to selectivelyextend to thereby serve to pivotally connect the short lever to theframe. Corresponding pivot pin holes are provided in the frame members2st, for receiving the pivot pin 36, and this pin is fitted in such ofthe holes of the pull bar 34: and the frame members 24L as will give asuitable lever arm for the drag line pull under the given conditions.This plurality of holes is for adjustment for this purpose. Since thedrag line pull is approximately horizontal or nearly so, as may beadjusted (in the line of the pull bar 34), the lever arm of this pull isnot measured by the distance of pivot 36 from pivot 25, but is measuredbv the vertical intercept between horizontal lines passing through thesepivot centers. This pull bar pivot connection makes a limited clockwisemovement on pivot 25 as a center as the hoisting line israised todigging position, which movement, by adjustment of connection 36 asdesired, in distance and in direction from pivot 25, is made to giveeither equal arms in sliding and digging or reduced arm in diggingcompared to the lever arm in sliding position, or vice versa. The crossbail and side extensions are each provided with an upwardly andoutwardly inclined slot 37 and each of tl e short pull levers or pullbars 34 are provided with guide pins or bolts 39 operatively extendingthrough these slots to constrain the lever to its proper motion.

In the form of my invention shown in Figures 6. 7 and 8 the inclinedslots of the extensions and cross bails, and the guide bolts, areomitted and in lieu thereof the outer end of the extension carries aguide bracket 40 bolted to the extension and slidablv receiving the pulllever iii hot-h eniliodiments the side plates are provided with an upperand a lower stop or abutment L1 and 32, respectively. These stops orabutments are preferably the form of angle piece bolts to the outer faceof each of the side plates and engageable with the lovers or otherportions of the associating frame. The upper stop is preferablyadjustable. shown in the drawings. These stops or abiitments serve tolimit the oscillatory movement of the frame and the upper stop has alsothe function of placing the line of action of the lifting force exertedby the hoist line and long lever in such relation to the center ofgravity of the bucket that when the burltet is being lowered to theground. after having been raised by the hoist line it will seek itsproper position and will not tilt or be otherwise displaced from thepro-per upright position.

In operation, the cuttin'g'bit is lllCllIlQtl with respect to the bodyof the bucket and to the ground. to the desired degree to vary theamount of the excavating or digging action. The position of the bucketbody with respect to the ground is not disturbed and it remains firmlyresting uponthe ground in perfect balance. This design is primarily formost cflicient use with the bottom removed, as in work when the materialmay be c:-:cavated and dragged in a more or less direct course to thepoint of disposal. ithout a bottom the bucket will dump more efiiciently(merely requiring to be picked up) and it will retain and. transport thema terial efiiciently, and will be lighter, for a given capacity.Thedegree of inclination of the cutting bit is at all tiniescontrollabloby the operator by simply varying the tension of the hoist line. This istrue irrespective of the hardness of the material being acted upon asthe hoist line lever arm is so much greater than the drag line leverarm, as already described. and consequently a very moderate tension uponthe hoist line creates a rather powerful moment tending to incline thecutting bit downwardly. 'Moreover this moment set up by the hoist lineopposes the u'ioment set up by the drag line and thus by increasing ordecreasing the tension on the hoist line. the inclination of the cuttingbit may be varied. If the hoist line is slack the dragline pulls thecutting bit out of the ground and as the line is tensioned it thus pullsthe cutting bit into the ground. When the cutting bit is out of theground the runners engage the ground and carry the bucket, the runnersbeing adapted for alternate engagement with the ground with respect tothe butting bit.

The bucket is adaptable to any character of working conditions or earthworking machinery. The necessary adjustment for this purpose beingreadily effected by varying the position of the extensions or changingthe connection of the short lever to the oscillating frame.

I claim:

1. In a bucket of the character described, a bucket body including sideplates, a back plate and a bottom plate, an adjustable extension carriedby the forward end of each of said side plates, an oscillating framecarried by the bucket body including a frame member pivoted to each ofthe side plates, upper and lower stops secured to each of the sideplates and adapted to limit the oscillatory movement of said frame. saidupper stop being adjustable and serving to prop crly suspend the framein elevated position, a cutting bit carried by the frame members, a longlever rigidly and directly secured to each frame member. a short leverpivotally connected to each of said frame members, guide means carriedby the adjustable extensinus and operatively engaged with the shortlever and runners carried by each of the long levers and adapted foralternate engagement with the ground with respect to thecutting bit.

2; In a bucket of the character described, a bucket body including sideplates, a back plate and a bottom plate, an adjustable en tension(:arried by the forward end of each of said side plates, an oscillatingframe car- 3; In a bucket of the "character described,

a bucket body including side plates, a back plate and a bottom plate, anadjustable extension carried by the forward end of each of said sideplates, an oscillating frame carried by the bucket body including aframe member pivoted to each of the side plates, a cutting bit carriedby the frame members. a long lever rigidly and directly secured to eachframe member, a short lever pivotally connected to each of said framemembers, and guide means carried by the adjustable extensions andoperatively engaged with the short lever. I

4. In a bucket of the character described, a bucket body including sideplates, a back plate and a bottom plate. an adjustable ex tensioncarried by the forward end of each of said side plates, anoscillatingframe carried by the bucket body including a frame memberpivoted to each of the side plates, a cutting bit carried by the framemembers, a long lever rigidly and directly secured to each frame member,and a short lever pivotally connected to each of said frame members.

In a bucket of the character described.

a bucket body including side plates, an adjustable extension carried bythe forward end of each of said side plates, a bail extending betweenand bracing said extensions. 21 frame pivoted to the sideplates of thebucket body, a long lever rigidly and directly secured to said frame, acutting bit carried by said frame. a short lever pivoted to said framebelow the pivot point of said frame to said bucket body and guidingmeans for said short lever carried by said side plate extensions.

6. In a bucket of the character described. a bucket body including sideplates, an adjust-able extension carried by the forward end of each ofsaid side plates, a frame nvoted to the side plates of the bucket body,lever rigidly and directly secured to name, a cutting bit carried bysaid frame, a short lever pivoted to said frame below the pivot point ofsaid frame to said larcket body, and guiding means for said shortlevercarried by said side plate extensions.

7. In a bucket of the character described, a bucket body including sideplates, an adjustable extension carried by the forward end of each ofsaid side plates, a frame pivoted to the side plates of the bucket body,a long lever rigidly and directly secured to said frame, a cutting bitcarried by said frame, a short lever pivoted to said frame, and guidingmeans for said shortlever carried by said side plate extensions.

8. In bucket of the character described, a bucket body, a frame pivotedto said bucket body, a. long lever rigidly and directly secured to saidframe, a cutting bit carried by said frame, a short lever pivoted tosaid frame below and radially of the pivot point of said frame to saidbucket body, and guiding means for said last-mentioned lever. 9. In abucket of the character described, a bucket body, a frame pivoted tosaid bucket body, a lever rigidly and directly secured to said frame, acutting bit carried by said frame, a lever pivoted to said frame belowand radially of the pivot point of said frame to said bucket body, andguiding means for said la sit-mentioned lever.

'10. In a bucket of the character described. a bucket body having anextension at its forward end, a cutting bit pivotally connee-ted to thebucket body, a lever pivotally connected to the cutting bit, and guidingmeans for said lever carried by the extension.

11. In. a bucket of the character described, a bucket body having anextension at its forward end, a cutting bit pivotally connected to thebucket body, a drag line, means con necting the drag line and thecutting bit, and guiding means for said last mentioned means carried bythe extension.

12. In a bucket of the character described, a bucket body, a cutting bitpivotally connected to the bucket body and a pull lever pivotallyconnected to the cutting bit below and radial of the pivotal connectionof the cutting bit to the bucket body.

13. In a bucket of the character described, av bucket body having anextension at its forwardend, a cutting bit pivotally connected to thebucket body, a long lever rigidly connected With the cutting bit, ahoist line connected with the long lever,a pull lever pivotallyconnected to the cutting bit, a drag line connected to the pull lever,and guiding means for the pull lever carried by the e);- tension.

14. In a bucket of the character described, abucket body, a framepivoted to said bucket body, a cutting bit carried by said frame, a pulllever pivotally connected to the cutter below the pivotal connection ofsaid frame and said bucket body, and guiding means for said pull lever.

lVlLLIAM LOVE THOMPSON.

